Can a 300-Cell Header Pass Annual Vehicle Inspection?

1 Answers
MacCourtney
07/29/25 5:30pm
300-cell headers can pass the annual vehicle inspection. Below are the relevant details: 1. Overview: The 300-cell catalytic converter has larger pores, and its pore size is the most reasonable parameter, ensuring both compliance with annual inspection requirements and a necessary degree of improvement in vehicle power. 2. Additional Information: The three-way catalytic converter is a crucial exhaust treatment device in automobiles, with at least one installed to process exhaust gases. Its primary function is to convert three harmful substances in vehicle exhaust—CO, HC, and NOx—into non-toxic, non-polluting gases such as CO, H2O, and N2. Additionally, there is a cylindrical device inside which contains a purifying agent made of a substrate and catalyst, effectively purifying gases as they pass through the cylindrical device.
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